Bicycle steering head tube



FIG. 1 is a top, front perspective view of a bicycle steering head tube;

FIG. 2 is a right side view of a bicycle steering head tube; and,

FIG. 3 is a top view of a bicycle steering head tube.

The broken, dashed lines shown in the various figures are included for the purpose of illustrating environment and do not form any part of the claimed design. 

CLAIM The ornamental design for a bicycle steering head tube, as shown and described. 